cnvd - cnvd-2019-09043

cnvd-2019-09043

Vulnerability from cnvd

Title: Phusion Passenger nginx模块权限提升漏洞

Description:

Phusion Passenger是荷兰Phusion公司的一个用于在Apache和Nginx网页服务器上部署Ruby on Rails项目的Apache模块。nginx module是其中的一个Nginx服务器模块。

Phusion Passenger 5.3.2版本至3.x版本（不包含5.3.2版本）中的nginx模块存在安全漏洞，该漏洞源于程序未能为所配置的非标准passenger_instance_registry_dir分配严格的权限。本地攻击者可通过在文件创建之后，用符号链接替换该文件利用该漏洞提升权限。

Severity: 中

Patch Name: Phusion Passenger nginx模块权限提升漏洞的补丁

Patch Description:

Phusion Passenger是荷兰Phusion公司的一个用于在Apache和Nginx网页服务器上部署Ruby on Rails项目的Apache模块。nginx module是其中的一个Nginx服务器模块。

Phusion Passenger 5.3.2版本至3.x版本（不包含5.3.2版本）中的nginx模块存在安全漏洞，该漏洞源于程序未能为所配置的非标准passenger_instance_registry_dir分配严格的权限。本地攻击者可通过在文件创建之后，用符号链接替换该文件利用该漏洞提升权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes/

Reference: https://blog.phusion.nl/passenger-5-3-2

Impacted products

Name
Phusion Passenger 5.3.*;<5.3.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-12029",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12029"
    }
  },
  "description": "Phusion Passenger\u662f\u8377\u5170Phusion\u516c\u53f8\u7684\u4e00\u4e2a\u7528\u4e8e\u5728Apache\u548cNginx\u7f51\u9875\u670d\u52a1\u5668\u4e0a\u90e8\u7f72Ruby on Rails\u9879\u76ee\u7684Apache\u6a21\u5757\u3002nginx module\u662f\u5176\u4e2d\u7684\u4e00\u4e2aNginx\u670d\u52a1\u5668\u6a21\u5757\u3002\n\nPhusion Passenger 5.3.2\u7248\u672c\u81f33.x\u7248\u672c\uff08\u4e0d\u5305\u542b5.3.2\u7248\u672c\uff09\u4e2d\u7684nginx\u6a21\u5757\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u4e3a\u6240\u914d\u7f6e\u7684\u975e\u6807\u51c6passenger_instance_registry_dir\u5206\u914d\u4e25\u683c\u7684\u6743\u9650\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728\u6587\u4ef6\u521b\u5efa\u4e4b\u540e\uff0c\u7528\u7b26\u53f7\u94fe\u63a5\u66ff\u6362\u8be5\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u6743\u9650\u3002",
  "discovererName": "unknwon",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-09043",
  "openTime": "2019-04-01",
  "patchDescription": "Phusion Passenger\u662f\u8377\u5170Phusion\u516c\u53f8\u7684\u4e00\u4e2a\u7528\u4e8e\u5728Apache\u548cNginx\u7f51\u9875\u670d\u52a1\u5668\u4e0a\u90e8\u7f72Ruby on Rails\u9879\u76ee\u7684Apache\u6a21\u5757\u3002nginx module\u662f\u5176\u4e2d\u7684\u4e00\u4e2aNginx\u670d\u52a1\u5668\u6a21\u5757\u3002\r\n\r\nPhusion Passenger 5.3.2\u7248\u672c\u81f33.x\u7248\u672c\uff08\u4e0d\u5305\u542b5.3.2\u7248\u672c\uff09\u4e2d\u7684nginx\u6a21\u5757\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u4e3a\u6240\u914d\u7f6e\u7684\u975e\u6807\u51c6passenger_instance_registry_dir\u5206\u914d\u4e25\u683c\u7684\u6743\u9650\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728\u6587\u4ef6\u521b\u5efa\u4e4b\u540e\uff0c\u7528\u7b26\u53f7\u94fe\u63a5\u66ff\u6362\u8be5\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Phusion Passenger nginx\u6a21\u5757\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Phusion Passenger 5.3.*;\u003c5.3.2"
  },
  "referenceLink": "https://blog.phusion.nl/passenger-5-3-2",
  "serverity": "\u4e2d",
  "submitTime": "2018-07-03",
  "title": "Phusion Passenger nginx\u6a21\u5757\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2018-12029 (GCVE-0-2018-12029)

Vulnerability from cvelistv5

Published

2018-06-17 20:00

Modified

2024-08-05 08:24

Severity ?

CWE

Summary

A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation of privileges when a non-standard passenger_instance_registry_dir with insufficiently strict permissions is configured. Replacing a file with a symlink after the file was created, but before it was chowned, leads to the target of the link being chowned via the path. Targeting sensitive files such as root's crontab file allows privilege escalation.

References

▼	URL	Tags
	https://blog.phusion.nl/passenger-5-3-2	x_refsource_MISC
	https://security.gentoo.org/glsa/201807-02	vendor-advisory, x_refsource_GENTOO
	https://pulsesecurity.co.nz/advisories/phusion-passenger-priv-esc	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2018/06/msg00007.html	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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